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Готові списки джерел за темами / Lubricating materials / Дисертації

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Дисертації з теми "Lubricating materials"

Автор: Grafiati

Опубліковано: 28 травня 2022

Оновлено: 31 липня 2025

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1

Villavicencio, Rojas Maria Daniela. "Predictive modelling of the tribological behaviour of self-lubricating composite materials." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSEI040.

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Dans les matériaux composites autolubrifiants, la génération de particules d’usure est nécessaire pour assurer la lubrification. Dans les roulements à billes, ce type de lubrification est possible grâce au matériau de la cage, composé d’un matériau composite autolubrifiant, tandis que le reste du roulement est fait en métal (AISI 440C). Pour les applications spatiales, le RT/Duroid 5813 est un composite autolubrifiant reconnu pour les cages de ce type de roulements. Ce matériau a été largement utilisé car il a répondu aux besoins de la lubrification sèche dans l’espace. Cependant, la productio

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2

Ström, Simon. "Boric acid as a lubricating additive in fuels and in hydraulic oils." Thesis, Uppsala universitet, Tillämpad materialvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-356795.

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Boric acid based fuel and oil additives were investigated in this study, with the aims to gain a deeper understanding of how the boric acid fuel additive behaves, to investigate the effect of low rates of fuel additive addition and tribofilm longevity, and to investigate how boric acid behaves as a hydraulic oil additive. Fuel additive experiments were performed in a reciprocating sliding rig with a cylinder on flat contact geometry with fuel additive sprayed on the contact repeatedly, whereas the hydraulic oil experiments were performed in a reciprocating sliding rig with a ball on flat conta

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3

Dennis, Grant. "Development of injection moulded self-lubricating short-fibre reinforced composites for use as plain bearing liner materials in aerospace applications." Thesis, Cardiff University, 2016. http://orca.cf.ac.uk/97497/.

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This thesis is concerned with the development of short fibre and particle reinforced polymer composites for plain bearing liners for aerospace applications. Detailed experimental investigations of the tribological and mechanical characteristics of these materials has been completed. The thesis culminates with the identification of two possible materials that have the potential for direct injection moulding of a bearing liner. 1. Developing an Injection moulding process A thorough understanding of the capability of injection moulding PEEK composites was achieved through experimental investigati

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4

Olander, Petra. "Tribology for Greener Combustion Engines : Scuffing in Marine Engines and a Lubricating Boric Acid Fuel Additive." Doctoral thesis, Uppsala universitet, Tillämpad materialvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-333430.

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This thesis aims at increased knowledge in two fields of tribological research; both related to making currently used combustion engines greener. The first field regards the possibilities of using a boric acid fuel additive to increase fuel efficiency. The second field is about the severe wear phenomenon scuffing, which can become problematic when cargo ships are operated on low-sulphur fuel to reduce sulphuric emissions. Tribological tests were developed and performed to simulate the applications. Advanced surface analysis was performed to understand changes occurring on the outermost surface

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5

Ляшенко, Яків Олександрович, Яков Александрович Ляшенко, Yakiv Oleksandrovych Liashenko та ін. "Моделювання просторової неоднорідності та температурної залежності в’язкості ультратонкої плівки мастила в режимі межового тертя". Thesis, Сумський державний університет, 2014. http://essuir.sumdu.edu.ua/handle/123456789/39385.

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Межовий режим тертя виникає, якщо змащувальний матеріал або відсутній зовсім, або має товщину в декілька атомарних діаметрів. У цьому режимі реалізується ряд цікавих ефектів – ефекти пам'яті, твердоподібні та рідиноподібні стани мастила, що не є стійкими термодинамічними фазами, переривчастий режим руху, нетривіальна залежність характеристик тертя від прикладеного зовнішнього навантаження, і т.п. Зокрема, при вивченні тертя плоских твердих поверхонь, розділених межовим шаром ароматичних сполук, коефіцієнт статичного тертя зі збільшенням навантаження зменшується, що пов'язано зі зменшенням кі

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6

OLIVEIRA, FELIPE de. "Estudo de camadas finas tratadas por laser em anéis de pistão." reponame:Repositório Institucional do IPEN, 2011. http://repositorio.ipen.br:8080/xmlui/handle/123456789/10048.

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Made available in DSpace on 2014-10-09T12:34:11Z (GMT). No. of bitstreams: 0<br>Made available in DSpace on 2014-10-09T14:06:38Z (GMT). No. of bitstreams: 0<br>Dissertação (Mestrado)<br>IPEN/D<br>Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP

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7

Scarton, Camila Taliotto. "Avaliação de óleo vegetal natural e epoxidado em composições elastoméricas para banda de rodagem." reponame:Repositório Institucional da UCS, 2017. https://repositorio.ucs.br/handle/11338/2822.

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Анотація:

A incorporação de óleos vegetais no desenvolvimento de formulações elastoméricas para bandas de rodagem tem sido umas das alternativas para reduzir o uso de óleos com alto teor de policíclicos aromáticos. Muitas pesquisas propõem a substituição do óleo aromático por óleos vegetais extraídos da palma e da soja, além disso, outros estudos sugerem que óleos vegetais apresentam características reativas capazes de promover a ativação em reações de vulcanização. Neste trabalho, o óleo de soja vegetal foi investigado como lubrificante/plastificante e também como co-ativadores em compostos de borracha

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8

Oliveira, Ana Flávia de. "Síntese e caracterização de biolubrificantes obtidos através de modificações químicas no óleo de soja refinado." Universidade Tecnológica Federal do Paraná, 2013. http://repositorio.utfpr.edu.br/jspui/handle/1/1936.

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Анотація:

Estimativas de esgotamentos das reservas petrolíferas vêm motivando pesquisas no intuito de buscar alternativas para combustíveis e derivados, como os lubrificantes baseados em óleos diferentes dos óleos minerais, visando assim reduzir a contaminação provocada pelo uso dos lubrificantes convencionais. O objetivo deste trabalho consiste em realizar modificações químicas no óleo de soja refinado, através da reação de transesterificação seguida da epoxidação, alcóxi-hidroxilação, di-hidroxilação e acetilação a fim de melhorar as características lubrificantes desse óleo. A transesterificação foi r

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9

Pendelton, Alice Mae. "Biofluid lubrication for artificial joints." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-3205.

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10

Watters, Eamon Patrick John. "Wear properties of artificial hip joint materials." Thesis, Queen's University Belfast, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.321968.

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11

Kaur, Gulsharan Rita. "Development studies of lubricating fluids to accelerate removal of material from silicon nitride." Thesis, Brunel University, 1998. http://bura.brunel.ac.uk/handle/2438/7134.

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Анотація:

The superior qualities of ceramics such as high hardness, chemical stability and wear resistance make them promising tribological materials for machine elements, for example, pumps, bearings and heat engines. Ceramics are hard and brittle, therefore, machining such materials is time-consuming, difficult and expensive. A low cost machining process that can remove material rapidly while maintaining a good surface finish is required. The general aim of the studies presented is to find a correlation between the wear mechanisms and surface modifications induced by interactions of tribochemical natu

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12

Salomon, Johan. "New materials in sliding bearings." Thesis, KTH, Maskinkonstruktion (Inst.), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-175891.

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Increasing demands for lower emissions from heavy trucks and buses creates new demands on the components in the engine. One such component is the journal bearing which is used at many positions in the engine. Implementing a start-stop system in a truck engine leads to that the crankshaft journal bearing gets worn out too quickly. A journal bearing is a sliding bearing with a constant flow of oil. When the journal starts rotating an oil film is formed between the bearing and the journal, separating the journal from the bearing surface when the rotational speed is high enough. When this happens

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13

Starbuck, J. M. "Tribological evaluation of dual lubricant condition-bearing materials for use in low pressure aerospace fuel pump systems." Thesis, University of Portsmouth, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.271449.

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14

Araya, Rivera Nicolás Ignacio. "Influence of heat treatments on the microstructural evolution and mechanical properties of self-lubricating sintered steel." reponame:Repositório Institucional da UFSC, 2016. https://repositorio.ufsc.br/xmlui/handle/123456789/168221.

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Анотація:

Dissertação (mestrado) - Universidade Federal de Santa Catarina, Centro Tecnológico, Programa de Pós-Graduação em Ciência e Engenharia de Materiais, Florianópolis, 2016.<br>Made available in DSpace on 2016-09-20T05:04:22Z (GMT). No. of bitstreams: 1 340635.pdf: 3912420 bytes, checksum: 3da6e9bc99fb124fe20226106ae4105b (MD5) Previous issue date: 2016<br>A pesquisa e desenvolvimento de materiais autolubrificantes estão diretamente associados com o desejo de diminuir o consumo de energia em aplicações onde lubrificantes fluidos são indesejados. Pesquisar e caracterizar as suas propriedades se t

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15

Takagi, Daisuke. "Spreading of viscous fluids and granular materials on slopes." Thesis, University of Cambridge, 2010. https://www.repository.cam.ac.uk/handle/1810/228707.

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Materials can flow down a slope in a wide range of geophysical and industrial contexts, including lava flows on volcanoes and thin films on coated surfaces. The aim of my research is to provide quantitative insight into these forms of motion and their dependence on effects of the topography, the volume and the rheology of the flowing structure. Numerous different problems are investigated through mathematical models, which are developed analytically and confirmed by laboratory experiments. The initial advance of long lava flows is studied by considering the flow of viscous fluid released on sl

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16

Al-Makhlafy, A. N. "The influence of compliant material and lubrication properties on squeeze film bearing performance." Thesis, Swansea University, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.635694.

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The current study represents a full investigation into the behaviour of a fluid film squeezed between two circular parallel plates by normal velocity which is produced by three types of loading condition: steadily-applied, impact-loaded, or oscillatory motion, in which the fluid in between the two plates is considered to be Newtonian or non-Newtonian and the solid boundary materials used are either both rigid or one of them is flexible. A mathematical model has been developed to include the effect of the fluid inertia, non-Newtonian fluid film, and flexibility of the solid material in determin

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17

Lindquist, Mattias. "Self Lubrication on the Atomic Scale : Design, Synthesis and Evaluation of Coatings." Doctoral thesis, Uppsala universitet, Institutionen för teknikvetenskaper, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-8443.

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In this thesis a new design concept of tribologically active coatings aimed for low friction applications, have been explored. Materials modeled by ab initio DFT calculations were realized through deposition of carbide and nanocomposite coatings by DC-magnetron sputtering. The design concept employs destabilization of a carbide material by alloying with a weak carbide-forming element, which refines the structure into a nanocomposite. The destabilization creates a driving force for superficial ejection of carbon in a tribological contact, forming a lubricious graphitic carbon layer. The otherwi

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18

Fletcher, David Ian. "The influence of lubrication on the fatigue of pearlitic rail steel." Thesis, University of Sheffield, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.299575.

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19

Gebretsadik, Daniel. "Tribological Behaviour of Pb-free Engine Bearing Materials." Licentiate thesis, Luleå tekniska universitet, Maskinelement, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-16981.

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Engine bearings are amongst the most critical components of an internal combustion engine that support and allow smooth rotation of the crankshaft. They are designed to operate under hydrodynamic lubrication condition where the bearing and shaft surface are separated by a thick lubricant film. However, they also occasionally operate under mixed and boundary lubrication conditions particularly during starting, stopping and load, speed and temperature variations. Under these conditions, tribological performance of bearing materials is crucial for the satisfactory performance of theengine. Tradit

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20

Stavlid, Nils. "On the Formation of Low-Friction Tribofilms in Me-DLC – Steel Sliding Contacts." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-7369.

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21

Željko, Aleksić. "Примена триболошких истраживања на примарним деловима вентила у гасним системима природног гаса". Phd thesis, Univerzitet u Novom Sadu, Fakultet tehničkih nauka u Novom Sadu, 2016. http://www.cris.uns.ac.rs/record.jsf?recordId=100691&source=NDLTD&language=en.

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Анотація:

У раду је извршено триболошко истраживање у области граничногподмазивања које се јавља на примарним деловима вентила усистемима природног гаса. Истраживања су извршена етапно, уреалним и, лабораторијским условима, користећи савремене методетриболошких експерименталних истраживања. Извршена је заменамогућим оптималним материјалима трибо парова у односу на реалнеефектуиране материјале вентила. Креирана су нова мазива за областграничног подмазивања у односу на инострана и извршено јеупоређивање по више критеријума. Статистичка, металографска,хемијска и физичка испитивања трибо парова су извршена

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22

Acharya, Ashwini. "Characterization of spherical boron nitride-filled greases for thermal interface material applications." Diss., Online access via UMI:, 2006.

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Анотація:

Thesis (M.S.)--State University of New York at Binghamton, Thomas J. Watson School of Engineering and Applied Sciences, Systems Science and Industrial Engineering Department, 2006.<br>Includes bibliographical references.

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23

Jain, Ayush. "Development and Characterization of Multi-scale Polymer Composite Materials for Tribological Applications." Thesis, Luleå tekniska universitet, Maskinelement, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-65241.

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Анотація:

With industries aiming at higher efficiencies, lightweight parts, and easier manufacturability there has been a recent trend of replacing the metallic materials with polymeric materials and its composites. Particularly in the automotive industry, there is a demand of replacing metallic material of bushes and bearings with polymer based materials (PBM). For these heavy performance requirements (as in automobiles), the commonly used industrial polymers like Acetal and Nylon fail to provide good mechanical and tribological performance. High-performance polymer like Polyphenylene Sulfide (PPS) is

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24

Vale, Jõao Luiz do. "Estudo do comportamento tribológico do politetrafluoretileno em deslizamento sem lubrificação contra aço inoxidável." Universidade Tecnológica Federal do Paraná, 2014. http://repositorio.utfpr.edu.br/jspui/handle/1/812.

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Анотація:

O presente trabalho discute o comportamento tribológico do politetrafluoretileno (PTFE), polímero amplamente utilizado na indústria em inúmeras aplicações tribológicas sem lubrificação, de onde se pode destacar sua utilização em mancais de deslizamento. Fez-se uma revisão bibliográfica buscando entender quais os principais parâmetros que influenciam o atrito cinético e os mecanismos que operam em polímeros. Foram realizados, ensaios de longa duração, em uma máquina de atrito cinético, desenvolvida e construída no Laboratório de Superfícies e Contato (LASC) da UTFPR, na qual uma bucha poliméric

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25

Wang, Ducai. "Elastohydrodynamic lubrication of point contacts for layers of "soft" solids and for "monolithic" "hard" materials in the transient bouncing ball problem." Thesis, University of Leeds, 1994. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.680199.

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26

Shahrezaei, Khashayar, and Edvin Öberg. "Evaluation Methods for Friction Materials in a Four-Wheel Drive Drivetrain." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-70776.

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Анотація:

BorgWarner located in Landskrona are developing components for the four-wheeldrive drivetrain that are being massed produced in the automotive industry. Thanks to Borg- Warner’s unique product’s properties they have achieved a worldwide leading position as a provider of systems for advanced four-wheeldrive drivetrain (all-wheel drivetrain). The assignment from the BorgWarner is to create a better understanding about when vibrations occur and what properties of a friction disc affect vibrations in the wet clutch. The goals of this thesis are to: Map system parameters like Surface topografy. Me

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27

Romanes, Maia Castillo Scharf Thomas W. "Structure and low-temperature tribology of lubricious nanocrystalline ZnO/Al₂O₃ nanolaminates and ZrO₂ monofilms grown by atomic layer deposition." [Denton, Tex.] : University of North Texas, 2008. http://digital.library.unt.edu/permalink/meta-dc-9741.

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28

Nelias, Daniel. "Contribution à l'étude des roulements." [S.l.] : [s.n.], 1999. http://csidoc.insa-lyon.fr/these/1999/nelias/index.html.

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29

Shirgaokar, Manas. "Technology to Improve Competitiveness in Warm and Hot Forging: Increasing Die Life and Material Utilization." Columbus, Ohio : Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1205347635.

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30

Jenei, István Zoltán. "Nanoparticle assisted tribofilm formation and material transfer studied with SEM and TEM." Doctoral thesis, Stockholms universitet, Fysikum, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-114745.

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Анотація:

The discovery and subsequent synthesis of metal containing fullerenes- IFS (Inorganic Fullerene-like Structures) by R. Tenne et al. has generated considerable scientific interest with great potential impact in many industrial application areas such as lubrication. The lubrication mechanism (tribofilm formation) via exfoliation and deposition of the atomic layers from this cage-like IF-particles was revealed and demonstrated first by this research group. The incorporation of the nanoparticles into lubricants (oils, greases) is however not straightforward. When two surfaces are sliding against e

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31

Wolf, Jason. "INVESTIGATION OF CHIP-FORM AND TOOL-WEAR IN TURNING OF HARDENED AF9628 ALLOY UNDER VARIOUS COOLING AND LUBRICATION CONDITIONS." UKnowledge, 2019. https://uknowledge.uky.edu/ms_etds/10.

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Анотація:

Next generation defense and commercial applications for structural steels require new alloys that eliminate or reduce critical elements from their composition to lower cost and improve manufacturability, while maintaining or exceeding high strength and toughness requirements. A new alloy, denoted as AF9628, has recently been developed for this purpose and its manufacturing characteristics and the material response in component manufacturing must be fully understood. In the present study, hardened AF9628 alloy was turned with a coated carbide cutting tool under fixed cutting speed, feed rate, a

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32

Quintero, Perez Henderson Ivan. "Desenvolvimento e avaliação de metodologias para purificação de biolubrificantes via destilação molecular de filme descendente." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/266630.

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Анотація:

Orientadores: Maria Regina Wolf Maciel, Cesar Benedito Batistella, Rubens Maciel Filho<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Química<br>Made available in DSpace on 2018-08-22T13:19:45Z (GMT). No. of bitstreams: 1 QuinteroPerez_HendersonIvan_D.pdf: 4930705 bytes, checksum: 6c2a9837f37fde815f53e580b02df9cc (MD5) Previous issue date: 2009<br>Resumo: O desenvolvimento de biolubrificantes vem sendo estimulado na indústria e na pesquisa, visando diminuir os danos ambientais causados por vazamentos inevitáveis em equipamentos ou motores com utilização prin

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33

Ost, Charles Antonio. "Análise da qualidade superficial no fresamento de aço P20 com diferentes tratamentos de ferramentas e condições de lubrirrefrigerantes." reponame:Repositório Institucional da UCS, 2016. https://repositorio.ucs.br/handle/11338/1426.

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Анотація:

Este trabalho estudou o efeito de tratamentos de gume e a interação com a aplicação de mínima quantidade de lubrirrefrigerante (MQL) sobre a integridade superficial da peça e desgaste no fresamento. A necessidade de alta produtividade das industrias aliada a alta eficiência que estas necessitam impulsionam avanços tecnológicos na área da usinagem. Processos de tratamento de gume vem para atender estas necessidades, aumentando a durabilidade e confiabilidade das ferramentas. Por outro lado, a necessidade de economia em fluidos de usinagem, sem perder em desempenho impulsiona a utilização de alt

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34

Vantomme, Pascal. "Contribution a l'etude des outillages et de leur lubrification dans le formage du verre creux : evolution vers une lubrification integree." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13112.

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Etude des proprietes de l'interface moule-verre et plus particulierement les phenomenes d'adherence. Trois types de materiaux de construction du moule sont etudies : des ceramiques (siliciures ou carbure de bore), des composites carbone-carbone et des materiaux frittes. Pour chacun de ses materiaux, les problemes de frottement et d'adherence sont etudies. L'analyse tribologique montre que la lubrification est convenable pour de faibles taux de permeabilite

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35

Song, Xi. "Reactive imcompressible flow with interfaces : macroscopic models and applications to self-healing composite materials." Thesis, Bordeaux, 2018. http://www.theses.fr/2018BORD0149/document.

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Dans ce manuscrit, nous parlons des matériaux composites à matrice céramiques (CMCs) qui sont envisagés pour intégrer les chambres de combustion de futurs moteurs aéronautiques civils. Pour faire face des conditions extrêmes, ces matériaux possèdent la particularité de s’auto-protéger vis-à-vis de l’oxydation par la formation d’un oxyde passivant qui limite la diffusion des espèces oxydantes au sein des fissures matricielles. Nous modélisons l’écoulement d’un oxyde dans une fissure par l’équation de Navier-Stokes, puis les mettons sous forme non dimensionnelles, et les dérivations de deux type

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36

Satam, Sayali S. "Optimization of Wet Friction Systems Based on Rheological, Adsorption, Lubricant and Friction Material Characterization." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1503358825451407.

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37

Tilson, Nial Robert. "An Experimental Evaluation of Micro-pitting Performance of Two Bearing Steels." The Ohio State University, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=osu1365695328.

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Pettersson, Ulrika. "Surfaces Designed for High and Low Friction." Doctoral thesis, Uppsala : Acta Universitatis Upsaliensis : Univ.-bibl. [distributör], 2005. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-5835.

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39

Mensah, Benedict Anyamesem. "Growth, Structure and Tribological Properties of Atomic Layer Deposited Lubricious Oxide Nanolaminates." Thesis, University of North Texas, 2010. https://digital.library.unt.edu/ark:/67531/metadc33186/.

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Friction and wear mitigation is typically accomplished by introducing a shear accommodating layer (e.g., a thin film of liquid) between surfaces in sliding and/or rolling contacts. When the operating conditions are beyond the liquid realm, attention turns to solid coatings. Solid lubricants have been widely used in governmental and industrial applications for mitigation of wear and friction (tribological properties). Conventional examples of solid lubricants are MoS2, WS2, h-BN, and graphite; however, these and some others mostly perform best only for a limited range of operating conditions

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40

Siopis, Matthew James. "Wear at high sliding speeds and high contact pressures." Diss., Georgia Institute of Technology, 2015. http://hdl.handle.net/1853/54854.

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Metal on metal wear at high sliding speeds and high contact pressures results in the melting of one or both of the sliding solid bodies due to heat generated at the contact interface. Understanding the influence of sliding speeds, contact pressures and material properties on wear rates is important in developing predictive models for designing more efficient and effective engineering system components. Typical engineering applications subjected to these extreme conditions include ultrahigh speed machining, rocket sleds, large caliber cannon, and electromagnetic launchers. Sliding speeds on the

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41

Macêdo, Gabriel. "Material Transfer Mechanisms during Interaction of Aluminium Alloy and Tool Steel at Elevated Temperatures." Thesis, Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-80118.

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Hot stamping of aluminium alloys allows for increased formability, decreased springback and the possibility of integrating age-hardening heat treatments into the process. However, it can be challenging due to the occurrence of material transfer of aluminium onto the tool, as aluminium is prone to adhesion even at low temperatures. Hence, lubrication is always necessary when forming aluminium, but lubricants can still fail, leading to direct interaction between tool and workpiece and thus material transfer. This phenomenon reduces the efficiency of the process, as interruptions are necessary fo

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42

Cococcetta, Nicholas Michael. "Investigating Surface Finish, Burr Formation and Tool Wear During Sustainable Machining of 3D Printed Carbon Fiber Reinforced Polymer (CFRP) Composites." Miami University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=miami1586533608277002.

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Ng, Sum Huan. "Measurement and modeling of fluid pressures in chemical mechanical polishing." Diss., Available online, Georgia Institute of Technology, 2005, 2005. http://etd.gatech.edu/theses/available/etd-03022005-142857/unrestricted/ng%5Fsumhuan%5F200505%5Fphd.pdf.

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Thesis (Ph. D.)--Mechanical Engineering, Georgia Institute of Technology, 2005.<br>Steven Danyluk, Committee Chair ; Richard Salant, Committee Member ; Jeffrey Streator, Committee Member ; Michael Sacks, Committee Member ; Dennis Hess, Committee Member ; Leonard Borucki, Committee Member. Includes bibliographical references.

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Strapasson, Gilmara. "Estudo da influência do lubrificante sólido MoS2 nas propriedades de revestimentos protetores de TiN." reponame:Repositório Institucional da UCS, 2010. https://repositorio.ucs.br/handle/11338/563.

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Neste trabalho investigou-se o revestimento protetor nitreto de titânio com a incorporação de dissulfeto de molibdênio como lubrificante sólido, visando aplicação em peças e ferramentas de corte na indústria metal-mecânica. Este revestimento foi obtido na forma de filme fino pela técnica de magnetron sputtering reativo modificando a quantidade de MoS2 de 2,9 a 40,3 % . As propriedades estruturais, físico-químicas, morfológicas, mecânicas e elementares foram analisadas observando a variação na quantidade de dissulfeto de molibdênio nos filmes finos. Estas propriedades foram analisadas por difer

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45

MICELI, PAOLO. "A multifunctional approach to the reduction of I.C.E. emissions." Doctoral thesis, Politecnico di Torino, 2018. http://hdl.handle.net/11583/2705731.

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Since its birth, in the late 19th century, the thermal engine has contributed to drive Society towards a continuous development, which finally led everybody to live in the so called Global Village. In this new modern World, the keyword is mobility. Mobility for money, for goods, for people. Nowadays of course, not all these things actually move by car but we all have a new mindset, for which everything is on hand and everywhere is right behind the corner. Worldwide, according to the economic development of each country, more and more families are getting a slice of this freedom, as example by

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46

Nilsson, Rickard. "Optimization of pneumatic activity sensor : Development of a low friction seal." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-74540.

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In this thesis, the development of a new type of seal is presented along with the steps taken to attain the conclusive design. The results are presented in this paper as a cross-sectioned CAD-model along with the selection of materials and suggestions for future work. The project was commissioned by the multi-discipline engineering consultancy company Projektengagemang AB in Karlstad, Sweden, and carried out as a master’s thesis at Karlstad University. The commission was due to a demand for a new type of sealing solution, as friction is a problem within the field of micro-pneumatics. The work

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47

Nanjundiah, Kumar. "Study of Confinement and Sliding Friction of Fluids Using Sum Frequency Generation Spectroscopy." University of Akron / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=akron1197046562.

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Hermansson, Jakob, and Emma Wahlström. "Materialval för minskat slitage av sandformningsverktyg." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-13776.

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På Volvo Group Trucks Operations (GTO) i Skövde tillverkas cylinderblock, cylinderhuvud och svänghjul genom gjutning med sandformar. Då formverktygen som formar sandformarna fylls uppkommer slitage där sandpartiklarna träffar, vilket leder till att formverktygen behöver underhållas regelbundet.Målet med denna studie är att hitta alternativa material som formverktygen kan tillverkas i alternativt förstärkas eller beläggas med för att minska slitaget i formverktygen och på så sätt minska kostnader genom att förlänga underhållsintervallen. Problemet analyseras och en litteraturstudie kring erosiv

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Romanes, Maia Castillo. "Structure and Low-temperature Tribology of Lubricious Nanocrystalline ZnO/Al2O3 Nanolaminates and ZrO2 Monofilms Grown by Atomic Layer Deposition." Thesis, University of North Texas, 2008. https://digital.library.unt.edu/ark:/67531/metadc9741/.

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Currently available solid lubricants only perform well under a limited range of environmental conditions. Unlike them, oxides are thermodynamically stable and relatively inert over a broad range of temperatures and environments. However, conventional oxides are brittle at normal temperatures; exhibiting significant plasticity only at high temperatures (>0.5Tmelting). This prevents oxides' use in tribological applications at low temperatures. If oxides can be made lubricious at low temperatures, they would be excellent solid lubricants for a wide range of conditions. Atomic layer deposition (AL

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Albo, Zieme Louise, and Pontus Bergstedt. "A pre-study for functional coatings evaluated on light metals to be applied on a new HPDC Mg-alloy : Investigating tribological and thermophysical properties, as-cast and coated." Thesis, Jönköping University, JTH, Industriell produktutveckling, produktion och design, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-53096.

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Magnesium with two-thirds of the density compared to aluminium and one-quarter of steel, intrigues product developers and material scientists due to the light metal’s excellent combination of strength to weight ratio as well as their capability of being produced as a High Pressure Die Cast component compared to other ferrous or light metal alloys. However, a magnesium alloy inherits some concerning drawbacks, limiting the exploitation in structural applications and mechanical design such as automotive, heavy machinery and aerospace components. The need for a magnesium alloy that could withst

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